Paper 13145-9
Paper 13145-9
Uncooled and low-cost photoconductive MWIR detector based on nano- and micro-particles embedded PbSe thin film
20 August 2024 • 5:25 PM - 5:45 PM PDT
Abstract
Polycrystalline lead selenide thin film has now emerged as a promising choice for low-cost and uncooled MWIR detectors and arrays operating at room temperature within the 3~5 µm wavelength range. LCDG (Laser Components Detector Groups) has successfully fabricated a new version of PbSe thin films using the chemical bath deposition (CBD) method on quartz substrates, enabling the development of infrared detectors and arrays with robust and high production yield. To achieve efficient activation of the PbSe thin film, LCDG investigates PbSe material from chemical reaction of the bath deposition to final packaging to meet various customer specifications and establishes PbSe detectors based on nano- and micro-particles embedded PbSe thin film, resulting in exceptional MWIR photoconductive response at room temperature. The characterization of PbSe thin film reveals the presence of various nanostructures, such as nano- and micro-particles as well as Pb-oxide phases and Pb-iodine phase carrier transporting channels. This paper reports the MWIR performance of the uncooled LCDG’s PbSe detector, focusing on responsivity, EQE, 1/f noise and FTIR spectral response (77K-340K), and D*.
Presenter
Laser Components Detector Group, Inc. (United States)
Richard Kim is the R&D Director at Laser Components Detector Group (LCDG, Arizona) since 2023. He has been leading innovations in Si and InGaAs APDs/PINs, UV detectors, MWIR Lead Salts, III-V InAsSb, T2SL InAs/GaSb detectors and MWIR ICLEDs. His works including FMAs, detector wafer fab process development, and finding new scientific discovery have made production yield improvement, cost reduction and IP generations, as well as bringing technology research collaborations. Previously, he was also at Optodiode/ITW, Lumentum, AFRL, UDRI, APIC, and UCLA where he focused on path finding research efforts in the areas of Various detectors, photonic integrated waveguide circuits, LiNbO3 electro-optic modulators/switches, and solar cells etc. He earned his doctoral degree in Materials Sciences and Engineering from University of California Los Angeles, 2009 and Electrical Engineering from Chonnam Nat. University, 1998. He holds tens of US/Korea patents and published papers.